Trampoline



FIG. 1 is a perspective view of the new design for a trampoline;

FIG. 2 is a front view of the new design;

FIG. 3 is a rear view of the new design;

FIG. 4 is a right side view of the new design;

FIG. 5 is a left side view of the new design;

FIG. 6 is a top view of the new design; and,

FIG. 7 is a bottom view of the new design.

The broken lines depict environment and form no part of the claim. 

CLAIM The ornamental design for a trampoline, as shown and described. 